Question 1

Which of the following essential ions is not transported elsewhere once it has been deposited in plant parts?

Accepted Answer

A)  sodium
B)  potassium
C)  calcium
D)  magnesium
E)  chlorideF) A) and D)
G) C) and D)

Question 2

Water may be lost in liquid form at the edges of the leaves of herbaceous plants through a process known as

Accepted Answer

A)  guttation.
B)  cohesion.
C)  phloem loading.
D)  mesophyll adhesion.
E)  aeration.F) C) and E)
G) A) and D)

Question 3

Photosynthesis can occur only if the stomata are open to allow the entry of

Accepted Answer

A)  O2.
B)  CO2.
C)  water.
D)  potassium.
E)  N2.F) A) and E)
G) A) and D)

Question 4

Some plants are able to endure frequent flooding events because they contain a tissue with loose parenchyma cells and large air spaces called

Accepted Answer

A)  xylem.
B)  spongy mesophyll.
C)  pneumatophores.
D)  aerenchyma.
E)  epidermal tissuE.F) A) and B)
G) D) and E)

Question 5

Which of the following is not transported within the plant by the xylem and/or the phloem?

Accepted Answer

A)  dissolved minerals
B)  sucrose
C)  growth-regulating hormones
D)  water
E)  starchF) A) and B)
G) A) and C)

Question 6

The process by which water is "pulled" up through the xylem columns of plants and evaporated out of the leaves is called

Accepted Answer

A)  root pressure.
B)  transpiration.
C)  osmosis.
D)  adhesion of water molecules.
E)  cohesion of water molecules.F) B) and C)
G) A) and B)

Question 7

Cavitation can occur when what happens?

Accepted Answer

A)  Root pressure pushes water up the xylem.
B)  Starch grains block the sieve tubes.
C)  Gas bubbles expand inside a tracheid or vessel member.
D)  Stomates get stuck closeD.
E)  Clouds block sunlight shining on the leaves.F) A) and E)
G) B) and D)

Question 8

Pure water without applied pressure has a water potential that is equal to

Accepted Answer

A)  infinity.
B)  0.0 MPa.
C)  1.6 MPa.
D)  -2.0 MPa.
E)  atmospheric pressurE.F) B) and E)
G) A) and E)

Question 9

Which of these structures is not likely to contain significant amounts of aerenchyma tissue?

Accepted Answer

A)  mangrove pneumatophores
B)  rice roots
C)  water lily leaves
D)  cypress "knees"
E)  coconut fruitsF) A) and D)
G) A) and E)

Question 10

Choose the letter of the best match from the following:
-Regulates movement of mineral ions into root xylem.

Accepted Answer

A)  abscisic acid
B)  trichomes
C)  aquaporin
D)  endodermis
E)  stomateF) B) and D)
G) B) and C)

Question 11

Which of the following equations represents the total water potential of a plant?

Accepted Answer

A)  s2 + p2 = w2
B)  Ys = Yp + Yw
C)  Yp = Yw + Ys
D)  Yw = Yp + Ys
E)  Yw = Ys /YpF) A) and B)
G) A) and C)

Question 12

Most of the water that evaporates from leaves passes out through the

Accepted Answer

A)  cuticle.
B)  ends of xylem vessels.
C)  epidermis.
D)  spaces between epidermal cells.
E)  stomata.F) A) and D)
G) A) and C)

Question 13

Water is able to cross plant plasma membranes by a combination of

Accepted Answer

A)  osmosis and aquaporins.
B)  evaporation and diffusion.
C)  root pressure and turgidity.
D)  diffusion and phloem.
E)  transpiration and casparian strips.F) B) and E)
G) A) and E)

Question 14

The plasma membranes of root hair cells contain a variety of protein transport channels through which specific ions are transported,even against large concentration gradients,by

Accepted Answer

A)  electron pumps.
B)  carbohydrate pumps.
C)  water pumps.
D)  proton pumps.
E)  root pumps.F) D) and E)
G) A) and C)

Exam 38: Transport in Plants

The plasma membranes of root hair cells contain a variety of protein transport channels through which specific ions are transported,even against large concentration gradients,by

Correct Answer
verified

The process by which water is "pulled" up through the xylem columns of plants and evaporated out of the leaves is called

Correct Answer
verified

Most of the water that evaporates from leaves passes out through the

Correct Answer
verified

Which of the following equations represents the total water potential of a plant?

Correct Answer
verified

Photosynthesis can occur only if the stomata are open to allow the entry of

Correct Answer
verified

Pure water without applied pressure has a water potential that is equal to

Correct Answer
verified

Which of the following is not transported within the plant by the xylem and/or the phloem?

Correct Answer
verified

Choose the letter of the best match from the following: -Regulates movement of mineral ions into root xylem.

Correct Answer
verified

Water is able to cross plant plasma membranes by a combination of

Correct Answer
verified

Some plants are able to endure frequent flooding events because they contain a tissue with loose parenchyma cells and large air spaces called

Correct Answer
verified

Cavitation can occur when what happens?

Correct Answer
verified

Which of these structures is not likely to contain significant amounts of aerenchyma tissue?

Correct Answer
verified

Water may be lost in liquid form at the edges of the leaves of herbaceous plants through a process known as

Correct Answer
verified

Which of the following essential ions is not transported elsewhere once it has been deposited in plant parts?

Correct Answer
verified

Exam 38: Transport in Plants

The plasma membranes of root hair cells contain a variety of protein transport channels through which specific ions are transported,even against large concentration gradients,by

Correct AnswerverifiedShow Answer

The process by which water is "pulled" up through the xylem columns of plants and evaporated out of the leaves is called

Correct AnswerverifiedShow Answer

Most of the water that evaporates from leaves passes out through the

Correct AnswerverifiedShow Answer

Which of the following equations represents the total water potential of a plant?

Correct AnswerverifiedShow Answer

Photosynthesis can occur only if the stomata are open to allow the entry of

Correct AnswerverifiedShow Answer

Pure water without applied pressure has a water potential that is equal to

Correct AnswerverifiedShow Answer

Which of the following is not transported within the plant by the xylem and/or the phloem?

Correct AnswerverifiedShow Answer

Choose the letter of the best match from the following: -Regulates movement of mineral ions into root xylem.

Correct AnswerverifiedShow Answer

Water is able to cross plant plasma membranes by a combination of

Correct AnswerverifiedShow Answer

Some plants are able to endure frequent flooding events because they contain a tissue with loose parenchyma cells and large air spaces called

Correct AnswerverifiedShow Answer

Cavitation can occur when what happens?

Correct AnswerverifiedShow Answer

Which of these structures is not likely to contain significant amounts of aerenchyma tissue?

Correct AnswerverifiedShow Answer

Water may be lost in liquid form at the edges of the leaves of herbaceous plants through a process known as

Correct AnswerverifiedShow Answer

Which of the following essential ions is not transported elsewhere once it has been deposited in plant parts?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified